公开(公告)号：US4817121A

公开(公告)日：1989-03-28

申请号：US031708

申请日：1987-03-30

申请人： Hiromu Shimizu ,  Isao Horiba

发明人： Hiromu Shimizu ,  Isao Horiba

IPC分类号： G01N23/04 ,  G01V5/00 ,  G01N23/10

CPC分类号： G01V5/0016 ,  G01N23/043

摘要： An apparatus for checking baggage with X-rays utilizing an X-ray source for irradiating X-rays toward an object to be checked on a conveyor with a fan-shaped beam, an X-ray detector including a plurality of detecting elements aligned along each of two arms of an L-shape arranged so that one arm extends substantially parallel and another arm extends substantially perpendicularly to a conveying surface of the conveyor means with the detecting elements providing electrical signals in proportion to intensity of the detected X-rays passed by the through the object as measured data, and a picture processor for converting the measured data into a picture signal for display on a display device. The picture processor includes a distortion correcting circuit for processing the measured data from the L-shaped X-ray detector so that the measured data corresponds to data obtained by detecting elements arranged along one straight line.

摘要翻译： 一种使用X射线检查行李的装置，其中X射线源用于在具有扇形光束的输送机上向待检查的物体照射X射线，X射线检测器包括沿着每一个排列的多个检测元件 L形的两个臂布置成使得一个臂基本上平行地延伸，另一个臂基本上垂直于传送装置的传送表面延伸，检测元件与所检测到的X射线的强度成比例地提供电信号 通过对象作为测量数据，以及图像处理器，用于将测量数据转换成用于显示在显示装置上的图像信号。 图像处理器包括用于处理来自L形X射线检测器的测量数据的失真校正电路，使得测量数据对应于通过沿着一条直线排列的元件检测获得的数据。

公开(公告)号：US4769757A

公开(公告)日：1988-09-06

申请号：US854555

申请日：1986-04-21

申请人： Isao Horiba ,  Hiroyuki Takeuchi ,  Hiroshi Nishimura

发明人： Isao Horiba ,  Hiroyuki Takeuchi ,  Hiroshi Nishimura

IPC分类号： H05G1/00 ,  A61B6/03 ,  G01T1/29 ,  G06F15/42

CPC分类号： A61B6/032 ,  G01T1/2985 ,  Y10S378/901

摘要： A CT scanner including a scanning device including (a) device for rotating an x-ray source around an object to be examined, the x-ray source radiating x-rays, while the x-ray source is being rotated, in the form of fan beams covering a region of the object to be examined, and (b) a multielement x-ray detector for detecting x-ray fan beams transmitted through the object to thus collect data around the irradiated object; an arithmetic device for arithmetically reconstructing the distribution of the x-ray absorption coefficients of the object across a measured cross-section from the data; and a display for displaying the distribution where the arithmetic device includes a device for producing data equivalent to data derived from parallel beams not regularly spaced apart from each other from the collected data around the irradiated object, a device for subjecting the produced data to filtering, and a device for correcting inhomogeneity in the data equivalent to data derived from parallel beams not regularly spaced and for back-projecting the image of the distribution.

摘要翻译： 一种CT扫描仪，其包括扫描装置，所述扫描装置包括：（a）用于使x射线源围绕待检查对象旋转的装置，所述X射线源在X射线源正在旋转的同时X射线源以X射线源旋转的形式 扇形光束覆盖待检测物体的区域，以及（b）多元素X射线检测器，用于检测通过物体透射的x射线扇形光束，从而收集被照射物体周围的数据; 算术装置，用于在数据的测量横截面上算术地重建物体的x射线吸收系数的分布; 以及用于显示分配的显示器，其中所述运算装置包括用于产生与从所述被照射对象周围的所收集的数据彼此不规则地间隔开的并行光束导出的数据相当的数据的装置;用于对所生成的数据进行滤波的装置， 以及用于校正与不规则间隔的平行光源导出的数据相当的数据的不均匀性的装置，以及用于反投影分布图像的装置。

公开(公告)号：US6084981A

公开(公告)日：2000-07-04

申请号：US617031

申请日：1996-03-18

申请人： Isao Horiba ,  Kenji Suzuki ,  Tatsuya Hayashi

发明人： Isao Horiba ,  Kenji Suzuki ,  Tatsuya Hayashi

IPC分类号： A61B5/00 ,  G06F15/18 ,  G06K9/40 ,  G06N3/00 ,  G06N3/04 ,  G06T1/00 ,  G06T5/00 ,  G09G5/36 ,  H04N1/40 ,  G06K9/62

CPC分类号： G06K9/40 ,  G06N3/04 ,  G06T5/002 ,  G06T2207/20084

摘要： An image processing apparatus using a neural network having: an image supplying unit for supplying spatiotemporal data of a predetermined region including a target pixel of an image; and a neural network formed by coupling a plurality of artificial neuron models so as to have at least an input layer, a hidden layer, and an output layer, wherein in the output layer, an input/output converting process is executed by a linear function and data corresponding to a target pixel is outputted from the output layer.

摘要翻译： 一种使用神经网络的图像处理装置，具有：图像提供单元，用于提供包括图像的目标像素的预定区域的时空数据; 以及通过耦合多个人造神经元模型而形成的至少具有输入层，隐藏层和输出层的神经网络，其中在输出层中，通过线性函数执行输入/输出转换处理 并且从输出层输出与目标像素对应的数据。

公开(公告)号：US4682301A

公开(公告)日：1987-07-21

申请号：US871246

申请日：1986-06-06

申请人： Isao Horiba ,  Ken Ishikawa

发明人： Isao Horiba ,  Ken Ishikawa

IPC分类号： G06F17/15 ,  G06T5/20 ,  H03H17/02 ,  G06F15/31 ,  H01J40/14

CPC分类号： H03H17/0202 ,  G06F17/153

摘要： Digital filters can be very effectively used for filtration of two-dimensional image. A special one of the digital filters operates to add together all data over a filter length, multiply the addition result by a predetermined set value, and to effect addition or subtraction between the multiplication result and data at a point of interest to be filtered. In case of the addition, the filter works as a low-pass filter. In case of the subtraction, the filter provides for a high-pass filtration. Such digital filter has such a problem that the number of additions is increased as the filter length is larger. Therefore, it is essential in the digital filters to reduce the necessary number of additions.

摘要翻译： 数字滤波器可以非常有效地用于二维图像的过滤。 数字滤波器中的特殊功能用于将滤波器长度上的所有数据相加在一起，将相加结果乘以预定的设定值，并且在乘法结果和要滤波的感兴趣点处的数据之间进行加法或减法。 在添加的情况下，滤波器用作低通滤波器。 在减法的情况下，过滤器提供高通过滤。 这种数字滤波器具有随着滤波器长度较大而增加的次数增加的问题。 因此，在数字滤波器中必须减少必要的加法次数。

公开(公告)号：US4672651A

公开(公告)日：1987-06-09

申请号：US834814

申请日：1986-02-28

申请人： Isao Horiba ,  Akira Iwata ,  Nobuo Suzumura ,  Hiroshi Matsuo

发明人： Isao Horiba ,  Akira Iwata ,  Nobuo Suzumura ,  Hiroshi Matsuo

IPC分类号： A61B6/00 ,  G01N23/04 ,  G06T11/00 ,  H04N5/32 ,  H05G1/60

CPC分类号： A61B6/504 ,  A61B6/481 ,  G01N23/043 ,  G06T11/006 ,  H04N5/3205 ,  H05G1/60 ,  G06T2211/412 ,  Y10S378/901

摘要： An object is irradiated with respective cone-beam like X-rays from first and second directions. For each of the first and second directions are produced mask and live images as respective projection images of the object before and after a contrast medium reaches an interested part of the object. Then, subtraction of the mask image from the live image is made in conjunction with each of the first and second directions. The resulting subtraction image assumes a projection image of the distribution of the contrast medium in the interested part taken in the corresponding direction. The respective projection widths of such projection images of the contrast medium distribution are determined to generate an ellipse defined by the projection widths. The shape of this ellipse is corrected in accordance with individual data values in the projection images of the contrast medium, thereby providing a corrected shape accurately resembling the actual shape of the interested part of the object. The corrected shape of the interested part is displayed.

摘要翻译： 从第一和第二方向照射具有像X射线的相应锥形束的物体。 对于第一和第二方向中的每一个，生成掩模和实时图像，作为对象的各个投影图像，在造影剂到达对象的感兴趣部分之前和之后。 然后，结合第一和​​第二方向中的每一个，从实况图像中减去掩模图像。 所得到的减影图像呈现在相应方向上拍摄的感兴趣部分中的造影剂的分布的投影图像。 确定造影剂分布的这些投影图像的相应投影宽度以产生由投影宽度限定的椭圆。 根据造影剂的投影图像中的各个数据值来校正该椭圆的形状，从而提供与物体的感兴趣部分的实际形状准确相似的校正形状。 显示感兴趣部分的校正形状。

公开(公告)号：US4352020A

公开(公告)日：1982-09-28

申请号：US109088

申请日：1980-01-02

申请人： Isao Horiba ,  Shigenobu Yanaka ,  Yasuo Kuwabara ,  Kouichi Koike

发明人： Isao Horiba ,  Shigenobu Yanaka ,  Yasuo Kuwabara ,  Kouichi Koike

IPC分类号： G01N23/04 ,  A61B6/00 ,  A61B6/03 ,  G06T11/00

CPC分类号： A61B6/583 ,  G06T11/005 ,  Y10S378/901

摘要： In the X-ray CT system, the X-ray detectors vary in output characteristics such as linearity, directivity and radiation quality from one detector to another. To make compensations for such irregularities, a plurality of phantoms of different absorption is prepared in the CT system according to the present invention. Namely, this plurality of phantoms is set one by one in the measuring space in the same manner as in the examination of an examinee or subject to be examined; the coefficient of X-ray absorption is determined for each of these phantoms. Further, theoretical values of absorption for each phantom are compared to the actual absorption measurements on each phantom to provide an absorption error value for each detector at differing absorption levels. The actual subject absorption value for each detector is used to pick the two error values closest to the actual value. The two error values are interpolated or extrapolated to find an error value for correcting the actual absorption value. The above method steps are advantageously implemented by one or more digital computers. The corrected subject absorption values are provided to a conventional image reconstruction device to provide the desired X-ray video image.

摘要翻译： 在X射线CT系统中，X射线检测器的输出特性如线性度，方向性和辐射质量从一个检测器到另一个检测器的不同。 为了对这种不规则性进行补偿，在根据本发明的CT系统中制备了不同吸收的多个体模。 即，在测量空间中以与检查对象或被检查对象相同的方式一个接一个地设置多个幻影， 确定每个这些幻影的X射线吸收系数。 此外，将每个体模的吸收的理论值与每个体模上的实际吸收测量进行比较，以在不同吸收水平下为每个检测器提供吸收误差值。 每个检测器的实际物体吸收值用于选择最接近实际值的两个误差值。 两个误差值进行内插或外插，以找到用于校正实际吸收值的误差值。 上述方法步骤有利地由一个或多个数字计算机实现。 校正的被摄体吸收值被提供给常规图像重建装置以提供期望的X射线视频图像。

公开(公告)号：US5036545A

公开(公告)日：1991-07-30

申请号：US235729

申请日：1988-08-19

申请人： Yoshihiko Iida ,  Mitsuru Ikeda ,  Ken Ishikawa ,  Isao Horiba

发明人： Yoshihiko Iida ,  Mitsuru Ikeda ,  Ken Ishikawa ,  Isao Horiba

IPC分类号： H04N1/387 ,  H04N1/40 ,  H04N5/257

CPC分类号： H04N1/40056

摘要： In a picture image reading system having a scanning system for scanning the surface of a picture image medium with light beams, an optical system for condensing the light beams transmitted through or reflected from the picture image medium and dividing the light beam into a plurality of light beams, and a plurality of density readers respectively responsive to the plurality of light beam where each density reader reads a predetermined ranges of density signals different from the ranges read by the remaining density readers, the improvement comprising a device for so establishing the density signal ranges read by the readers that adjacent density signal ranges partially overlap one another; a detecting device responsive to the density signals from the plurality of readers for detecting density signals occurring in overlapping portions where the density signal ranges of adjacent readers overlap and providing an overlap signal indicative of the occurrence; and a synthesizing device responsive to the density signals read from the plurality of readers and the overlap signal for connecting the density signals from the plurality of readers to synthesize a composite density signal corresponding to the entire density range of the picture.

摘要翻译： 在具有用于用光束扫描图像介质的表面的扫描系统的图像读取系统中，用于会聚从图像介质传输或反射的光束并将光束分成多个光的光学系统 光束和多个密度读取器，分别响应于多个光束，其中每个浓度读取器读取与剩余密度读取器读取的范围不同的密度信号的预定范围，改进包括用于建立密度信号范围的装置 由读者阅读，相邻密度信号范围部分重叠; 响应于来自多个读取器的浓度信号的检测装置，用于检测在相邻读取器的浓度信号范围重叠的重叠部分中出现的浓度信号，并提供指示发生的重叠信号; 以及响应于从多个读取器读取的密度信号的合成装置和用于连接来自多个读取器的浓度信号的重叠信号，以合成对应于图像的整个密度范围的复合密度信号。

公开(公告)号：US4780831A

公开(公告)日：1988-10-25

申请号：US755824

申请日：1985-07-17

申请人： Akira Iwata ,  Isao Horiba

发明人： Akira Iwata ,  Isao Horiba

IPC分类号： G06T7/40 ,  G06F17/14 ,  G06T1/00 ,  G06T1/20 ,  G06T11/00 ,  G06G7/19

CPC分类号： G06F17/142

摘要： A graphic data processor for processing two-dimensional signals or one-dimensional signals such as observed graphic data. One graphic data processor includes circuitry for effecting two-dimensional Fourier conversion of the observed graphic data signals such that components occur with respect to first through fourth image limits on the resultant two-dimensional Fourier plane; circuitry for forming processed graphic data including circuitry for nullifying all but one of the components from the first through fourth image limits and circuitry for effecting two-dimensional inverse Fourier conversion on the one component to derive the processed graphic data; circuitry for determining the phase component of the processed graphic data; and circuitry for determining the local gradient of said phase component.Another graphic data processor includes circuitry for effecting one-dimensional Fourier conversion of the observed graphic data signals; circuitry for forming processed graphic data including circuitry for nullifying negative components, leaving positive components and circuitry for effecting one-dimensional inverse Fourier conversion on one component to drive the processed graphic data; circuitry for determining the phase component of the processed graphic data; and circuitry for determining the instantaneous frequency.

摘要翻译： 用于处理二维信号或一维信号（例如观察图形数据）的图形数据处理器。 一个图形数据处理器包括用于对观察到的图形数据信号进行二维傅里叶转换的电路，使得相对于得到的二维傅里叶平面上的第一至第四图像限制发生分量; 用于形成经处理的图形数据的电路，包括用于从第一至第四图像限制中将除了一个组件之外的所有部分消除的电路，以及用于对所述一个部件进行二维傅里叶逆变换以导出处理后的图形数据的电路; 用于确定经处理的图形数据的相位分量的电路; 以及用于确定所述相位分量的局部梯度的电路。 另一图形数据处理器包括用于对观察到的图形数据信号进行一维傅里叶变换的电路; 用于形成处理的图形数据的电路，包括用于使负组件无效的电路，留下正分量和电路，用于对一个分量进行一维傅里叶逆变换以驱动经处理的图形数据; 用于确定经处理的图形数据的相位分量的电路; 以及用于确定瞬时频率的电路。

公开(公告)号：US4212062A

公开(公告)日：1980-07-08

申请号：US919627

申请日：1978-06-27

申请人： Hideki Kohno ,  Hidemi Shiono ,  Chitose Nakaya ,  Kensuke Sekihara ,  Teruichi Tomura ,  Shinji Yamamoto ,  Takayuki Hayakawa ,  Isao Horiba ,  Shigenobu Yanaka

发明人： Hideki Kohno ,  Hidemi Shiono ,  Chitose Nakaya ,  Kensuke Sekihara ,  Teruichi Tomura ,  Shinji Yamamoto ,  Takayuki Hayakawa ,  Isao Horiba ,  Shigenobu Yanaka

IPC分类号： G01N23/04 ,  A61B6/03 ,  G06Q50/22 ,  G06Q50/24 ,  G06T11/00 ,  G06F15/34

CPC分类号： A61B6/032 ,  G06T11/006 ,  Y10S378/901

摘要： A tomographic imaging system is disclosed in which the quantity of absorption or transmittance of a transmissive radiation by or through a certain tomographic cross-section of an object under consideration is detected and the distribution of radiation absorption or transmittance in the cross-section is reconstructed through a convolution operation. A weighting function used in the convolution operation is prepared with a predetermined one of its positive orders the value of which is an integration of the weighting function from the predetermined positive order to positive infinity and a predetermined one of its negative orders the value of which is in integration of the weighting function from the predetermined negative order to negative infinity.

摘要翻译： 公开了一种断层图像成像系统，其中检测由所考虑的物体的特定断层摄影横截面或通过所考虑的物体的某些断层摄影横截面的透射辐射的吸收或透射率，并且通过以下方式重建横截面中的辐射吸收或透射率的分布： 卷积运算 在卷积运算中使用的加权函数以其正值中的预定的一个准备，该值的正值为加权函数从预定的正阶数到正无穷大的积分，以及负值的预定值，其值是 将加权函数从预定的负数整合到负无穷大。

公开(公告)号：US4740896A

公开(公告)日：1988-04-26

申请号：US776473

申请日：1985-09-16

申请人： Isao Horiba ,  Akira Iwata ,  Hiroshi Sasaki ,  Kazuhiro Sato

发明人： Isao Horiba ,  Akira Iwata ,  Hiroshi Sasaki ,  Kazuhiro Sato

IPC分类号： G01N23/04 ,  A61B6/03 ,  G06T1/00 ,  G06T11/00 ,  G06F15/42 ,  A61B6/02 ,  G06K9/46

CPC分类号： A61B6/032 ,  A61B6/4014 ,  G06T11/005 ,  Y10S378/901

摘要： In an X-ray CT apparatus including an X-ray source for irradiating X-rays to an object to be tested; a radiant ray detector for detecting the amount of X-rays transmitted through said object to be tested; a device for rotating the X-ray source and the detector about an axis to produce detection signals corresponding to the amount of transmitted X-rays; a filter for filter processing the detection signal; circuitry for back-projecting the filtering resultant to thereby reproduce a distribution image of X-ray absorption in a cross-section of the object to be tested, and a device for interpolating interpolation values into the detection signals to form expanded signals having an elongated length so that the expanded signals are used for the filter processing.

摘要翻译： 在包括用于将X射线照射到待测试对象的X射线源的X射线CT装置中， 辐射线检测器，用于检测透过所述被测试物体的X射线量; 用于使X射线源和检测器绕轴旋转以产生对应于透射X射线量的检测信号的装置; 用于过滤处理检测信号的滤波器; 用于反向投影滤波结果的电路，从而在待测试对象的横截面中再现X射线吸收的分布图像;以及用于将内插值内插到检测信号中以形成具有细长长度的扩展信号的装置 使得扩展的信号用于滤波处理。